4 years ago

How to identify lipids and non-lipids?

1 answer:

3 0

Get a sample of food. place onto a test tube. add sudan 111 reagand to it. If there are lipids red flat globules will appear.

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The immersed volume of body in a liquid depends on density of the liquid. TRUE or FALSE?

miss Akunina [59]

Answer:

True - Archimedes Principle states that the buoyant force on an object is equal to the weight of the liquid displaced.

8 0

2 years ago

What is the time period and frequency of a sound wave if it completes 500 vibrations in 50 seconds

Degger [83]

Answer:

10 vibrations per second

Explanation:

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3 years ago

a quarterback throws a football with angle of elevation 40degrees and speed 60ft/s. Find the horizontal and vertical components

pshichka [43]

the horizontal velocity would be equal to
Vh = sin (40) /60
= 0.74 * 60
= 44

the Vertical velocity would be equal to
Vv = cos(40) * 60
=40

4 0

3 years ago

How do u work out b) ii)

Yakvenalex [24]

Explanation:

potential difference = current × risstance

see part a point3 current is same

v= IR

v = 8×0.2

v= 1.6

see part a point 5

this potential difference is less than cell

7 0

3 years ago

At what frequency should a 200-turn, flat coil of cross sectional area of 300 cm2 be rotated in a uniform 30-mT magnetic field t

stellarik [79]

Answer:

The frequency of the coil is 7.07 Hz

Explanation:

Given;

number of turn of the coil, N = 200 turn

area of the coil, A = 300 cm² = 0.03 m²

magnitude of magnetic field, B = 30 mT = 0.03 T

maximum value of induced emf, E = 8 V

The maximum induced emf in the coil is given by;

E = NBAω

E = NBA(2πf)

$f = \frac{E_{max}}{2\pi*NBA}$

where;

f is the frequency of the coil

$f = \frac{E_{max}}{2\pi*NBA}\\\\f = \frac{8}{2\pi(200)(0.03)(0.03)} \\\\f = 7.07 \ Hz$

Therefore, the frequency of the coil is 7.07 Hz

5 0

3 years ago